122643401 has 2 divisors, whose sum is σ = 122643402. Its totient is φ = 122643400.

The previous prime is 122643317. The next prime is 122643413. The reversal of 122643401 is 104346221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62425801 + 60217600 = 7901^2 + 7760^2 .

It is a cyclic number.

It is not a de Polignac number, because 122643401 - 2¹⁴ = 122627017 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (122645401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61321700 + 61321701.

It is an arithmetic number, because the mean of its divisors is an integer number (61321701).

Almost surely, 2^122643401 is an apocalyptic number.

It is an amenable number.

122643401 is a deficient number, since it is larger than the sum of its proper divisors (1).

122643401 is an equidigital number, since it uses as much as digits as its factorization.

122643401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 122643401 is about 11074.4481126601. The cubic root of 122643401 is about 496.8379125622.

Adding to 122643401 its reverse (104346221), we get a palindrome (226989622).

The spelling of 122643401 in words is "one hundred twenty-two million, six hundred forty-three thousand, four hundred one".